Fun fact: the 'fire in a crowded theater' example was originally used as an analogy to justify censoring pacifist opposition to the First World War and the mili

Fun fact: the 'fire in a crowded theater' example was originally used as an analogy to justify censoring pacifist opposition to the First World War and the military draft. This doesn't make the example invalid, mind you. But I consider it a warning to be extremely careful and skeptical when equating 'dangerous' speech to immediate physical damage.